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    Wildlife Populations Fall 58 Percent in 42 Years

    Humans: Worse than a meteor hitting the Earth. A new study has found animal populations declining about 100 times faster than what’s considered a normal rate — mostly due to rising human populations, hunting, habitat degradation and climate change. Freshwater species are the worst hit, with an 81 percent dive in numbers across lakes, wetlands and rivers since 1970. And it’s not slowing down: The report predicts that by 2020, the world’s wildlife populations will have declined 67 percent, in what could be the worst mass extinction since the dinosaurs.

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